Jaicedion @base is the NPC Alex Vendor
You need to trade Jaicedion the Alexandrite and required trade item at the same time.
At this time you may not get a confirmation of obtaining item, but it will be in your inventory.
If you decide you would prefer a different Apocalypse Nigh earring (60 Alex items), simply trade your current earring back to Jaicedion.
He will refund you the purchase price, less a 5 Alex processing fee. Please note, you may only possess one Apocalypse Nigh earring at a time.
^ The Occasionally Quickens Spellcasting +3% is not active on DSP.